A pumping device for a seat of a vehicle is proposed. In the pumping device, a plurality of pressure members is provided along an outer circumferential surface of a brake drum, and braking operation is performed through the pressure members moved when the brake drum rotates, so that friction between the brake drum and a housing can be avoided and thus deterioration of operational performance is prevented. In addition, the shape of the brake drum is simplified and the number of components is reduced, so that weight and size of the pumping device, and production cost are reduced, and fuel efficiency increases.

A lockout system for an aircraft having a rotor assembly. The lockout system includes a drive shaft coupled to and rotatable with the rotor assembly, a nonrotating airframe structure disposed proximate the drive shaft and a lock assembly having first and second lock members. The first lock member is rotatable with the drive shaft and includes a plurality of bearing assemblies. The second lock member is coupled to the nonrotating airframe structure and includes a cradle having a plurality of asymmetric slots each with a leading ramp and a trailing stop. The lock assembly has a disengaged position in which rotation of the drive shaft is allowed and an engaged position in which each of the bearing assemblies is seated within one of the asymmetric slots to prevent rotation of the drive shaft. The lock assembly is actuatable between the engaged and disengaged positions.

A method for damping a movement of a door system of a vehicle that is equipped with a damping system having an adjustable and controllable damping action. A movement of the door system between a closed position and an open position is damped in a controlled manner. A measurement of the change in speed of the speed of movement of the door system is calculated and if the change in speed exceeds a predefined limit value, a set, gentle damping action is changed over to a greater damping action.

The application provides a rotating device, including: an annular base, a first positioning member, a second positioning member, and a driving member. The driving member includes a pushing structure. The driving member drives the pushing structure to rotate around the outer edge of the peripheral portion in a first rotating direction or a second rotating direction; when the pushing structure rotates in the first rotating direction, the first stop portion and the third stop portion fit the peripheral portion in response to the push of the pushing structure, and the second stop portion and the fourth stop portion stop the pushing structure; and when the pushing structure rotates in the second rotating direction, the second stop portion and the fourth stop portion fit the peripheral portion in response to the push of the pushing structure, and the first stop portion and the third stop portion stop the pushing structure.

The application provides a rotating device, including: an annular base, a first positioning member, a second positioning member, and a driving member. The driving member includes a pushing structure. The driving member drives the pushing structure to rotate around the outer edge of the peripheral portion in a first rotating direction or a second rotating direction; when the pushing structure rotates in the first rotating direction, the first stop portion and the third stop portion fit the peripheral portion in response to the push of the pushing structure, and the second stop portion and the fourth stop portion stop the pushing structure; and when the pushing structure rotates in the second rotating direction, the second stop portion and the fourth stop portion fit the peripheral portion in response to the push of the pushing structure, and the first stop portion and the third stop portion stop the pushing structure.

A door component has a damper device with two connection units that can be moved relative to each other for damping a door movement of a door of a vehicle. The damper device contains a magnetorheological fluid, as an operating fluid, and a cylinder unit having a first chamber and a second chamber. The two chambers are separated from each other by a piston which is provided with a damping valve. The damper device has a connection which is constructed for coupling to a drive. The damper device can be moved in an active manner at least from a first position into a second position by the drive which is coupled via the connection.

A dog clutch comprising a sleeve and a relative crown with respective teeth conformed for engaging each one alternatively to the others wherein, during operation a pulling side for said teeth is defined, that identifies a surface through which the torque is transferred, and wherein, the teeth pulling side or at least the crown and/or the sleeve is conformed so that the relative tooth is tapered from a relative base towards a relative vertex, wherein said pulling side comprises at least three portions of which a first portion is adjacent to said base and a third portion is adjacent to said vertex following a rectilinear path and being approximately parallel to generating line of said crown or sleeve, and having a second portion adjoining said first portion with said third portion.

A dog clutch comprising a sleeve and a relative crown with respective teeth conformed for engaging each one alternatively to the others wherein, during operation a pulling side for said teeth is defined, that identifies a surface through which the torque is transferred, and wherein, the teeth pulling side or at least the crown and/or the sleeve is conformed so that the relative tooth is tapered from a relative base towards a relative vertex, wherein said pulling side comprises at least three portions of which a first portion is adjacent to said base and a third portion is adjacent to said vertex following a rectilinear path and being approximately parallel to generating line of said crown or sleeve, and having a second portion adjoining said first portion with said third portion.

An apparatus (B) controls rotation of an annular member (36) relative to top and bottom housings (12, 10). The bottom housing (10) includes a disk (110) extending radially and terminating in a cylindrical portion (112) having circumferentially spaced slits (212). A wedge (16) abuts with the cylindrical portion (112) and is moved radially between first and second positions by an axially moveable piston (14), with the wedge including an angle surface (340) which interfaces with an angled surface (520) of the piston (14) through a plurality of balls (18). The disk (110) and the cylindrical portion (112) are formed as a single component of material having sufficient material strength and yield to allow engagement and disengagement of the cylindrical portion (112) with the annular member (36). The wedge (16) is slideable between an axial surface (250) of the disk (110) and a guiding flange (450) of the top housing (12).

An apparatus (B) controls rotation of an annular member (36) relative to top and bottom housings (12, 10). The bottom housing (10) includes a disk (110) extending radially and terminating in a cylindrical portion (112) having circumferentially spaced slits (212). A wedge (16) abuts with the cylindrical portion (112) and is moved radially between first and second positions by an axially moveable piston (14), with the wedge including an angle surface (340) which interfaces with an angled surface (520) of the piston (14) through a plurality of balls (18). The disk (110) and the cylindrical portion (112) are formed as a single component of material having sufficient material strength and yield to allow engagement and disengagement of the cylindrical portion (112) with the annular member (36). The wedge (16) is slideable between an axial surface (250) of the disk (110) and a guiding flange (450) of the top housing (12).